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Method and apparatus for detecting flicker in an LCD image

a technology of digital images and flicker detection, applied in the field of liquid crystal displays, can solve the problems of user eye fatigue and difficulty in interpreting displayed information, and achieve the effect of improving the accuracy of display information

Inactive Publication Date: 2003-03-20
TAMIRAS PER PTE LTD LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, however, what is referred to as a kickback voltage is generated by parasitic capacitance in the pixels such that the RMS of the positive voltage is different from the RMS of the negative voltage.
LCD, or luminance, flicker (which is inherent in the majority of LCD flat panels when) has been a primary concern for applications that require the display of high contrast, high density, moving data in that the continual luminance flicker can cause serious eye fatigue to the user resulting in difficulty in interpreting the displayed information, for example.

Method used

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  • Method and apparatus for detecting flicker in an LCD image

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Embodiment Construction

[0032] Reference will now be made in detail to a preferred embodiment of the invention. An example of the preferred embodiment is illustrated in the accompanying drawings. While the invention will be described in conjunction with a preferred embodiment, it will be understood that it is not intended to limit the invention to one preferred embodiment. To the contrary, it is intended to cover alternatives, modifications, and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims.

[0033] In one embodiment, a flicker pattern detector coupled to a video signal source suitable for detecting a sub-pixel pair susceptible to producing a flicker event in an image displayed on a liquid crystal display (LCD) unit is described. The flicker pattern detector includes a two dimensional flicker pattern analyzer arranged to perform a two dimensional flicker pattern analysis on a selected group of sub-pixels some of which are included in a first plu...

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Abstract

A method, system and apparatus for detecting a sub-pixel pair susceptible of producing a flicker event in an image from a video signal source displayed on a liquid crystal display (LCD) unit is described. A two dimensional flicker pattern analysis is performed on a selected group of sub-pixels some of which are included in a first plurality of sub-pixels that includes a first current sub-pixel and a first next sub-pixel included in a first video frameline and a remainder of which are included in a second plurality of sub-pixels included in a second video frameline that is received, in real time, from the video signal source that includes a second current sub-pixel and a second current sub-pixel.

Description

[0001] 1. Field of the Invention[0002] The invention relates to liquid crystal displays (LCDs). More specifically, the invention describes a method and apparatus for detecting flicker in a digital image displayed on a liquid crystal display.[0003] 2. Discussion of Related Art[0004] Liquid crystal displays (LCDs) are significantly lighter in weight and slimmer, consume far less energy and can reproduce a wider range of colors than any competing technologies. Accordingly, LCDs are increasingly being used for the display device in televisions, personal computers, etc., and in many state-of-the-art equipment such as automotive navigation systems and simulation devices.[0005] Using contemporary LCD technology, an electric field is applied to liquid crystal material having an anisotropic dielectricity that is injected between two substrates (an array substrate and a counter substrate) that are arranged substantially parallel to one another with a predetermined gap between them. A displaye...

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G09G3/36
CPCG09G3/3611G09G2320/0247
Inventor WU, CHE MINGWANG, VINCENTSOONG, JIH HSIEN
Owner TAMIRAS PER PTE LTD LLC
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